| OVAL CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20110193003 | TORQUE LIMITER AND VALVE ACTUATOR - A torque limiter which can detect torque of both opening and closing of a valve and in which different torque values for opening and closing of the valve can be easily set. The torque limiter is provided with a torque arm having a connection section which is connected to a drive side gear and an intermediate gear and also having an arm section projecting from the connection section; an open side spring portion and a closure side spring means which apply spring force balancing with force acting, in proportion to torque of a load in opening and closing operation of the valve, in the direction of a tangential line at the meshing point of the intermediate gear; an open side torque detection switch and a closure side torque detection switch which are, when torque of a load in opening and closing operation of the valve exceeds a predetermined value, operated by the arm section; and a torque limiter shaft passed through the open and closure side spring portion. The torque limiter shaft is adapted such that spring force of each of the open and closure side spring portion can be adjusted from an end of the torque limiter shaft. | 08-11-2011 |
| 20100307234 | POSITIVE DISPLACEMENT FLOWMETER AND HELICAL GEAR - An ideal positive displacement flowmeter which has a pair of helical gears given by using oval pitch curve as reference rack tooth profile, with the tooth height ratio of the reference rack tooth profile even with a small number of teeth being set to π m/4 which is a logical limit for the tooth height ratio of a one-point continuous contact tooth profile and which has no confinement phenomenon between tooth profiles. The positive displacement flowmeter has a pair of helical gears ( | 12-09-2010 |
| 20100281970 | POSITIVE DISPLACEMENT FLOWMETER - A position displacement flowmeter having a pair of non-circular gears in a rolling contact on a pitch line without slippage. The positive displacement flowmeter comprises a casing and a pair of rotors provided in the casing and rotatable around its center axes. The pair of rotors have a tooth profile curve which is an oval pitch curve itself having a trajectory of contact points on the pitch line, and they satisfy a condition of r | 11-11-2010 |
| 20090289810 | Processing Method in Operation System, Flow Rate Converter, and Coriolis Flow Meter - Provided is a processing method for an operation system which performs operation processing in accordance with a detection amount detected by detection means and pulse output processing in which an operation result from the operation processing is transmitted as a pulse output, including: controlling transmission of the pulse output performed in the pulse output processing to make the transmission of the pulse output asynchronous with a timing of an end of the operation processing; and transmitting, by repeating the controlling, a pulse train having time-series continuity. | 11-26-2009 |
